¿Cómo se recolecta la muestra de copro y que indicaciones tienen los estudios?
Sample Collection for Copro or Feces Analysis
Overview of Sample Collection
- Copro or feces samples have minimal rejection criteria and do not spoil like urine samples; however, specific details must be considered based on the study type and sample characteristics.
- Samples should be collected in a clean, wide-mouthed bottle with a hermetic seal; sterility is not required. Various types of containers are acceptable, including those with pressure seals.
Methods of Sample Collection
- For children, using a potty-type container simplifies collection. Adults should avoid water in the bath cup to prevent contamination during defecation.
- Alternative methods include placing plastic over the toilet seat to collect samples without contamination from urine or sewage.
Serial Examination Considerations
- For serial coproparasitoscopic examinations, it is recommended to collect three samples on different days to enhance detection of cysts and parasitic forms.
- Liquid samples (especially diarrheal ones containing blood or mucus) should ideally be analyzed within two hours post-collection due to the labile nature of trophozoites.
Timeliness and Laboratory Delivery
- Stool tests require delivery to the laboratory within 10 hours after collection; this timeframe is crucial for accurate chemical testing results.